{ lib, stdenv, fetchurl, fetchFromGitHub, apple-sdk, apple-sdk_11, darwinMinVersionHook }: let # The x86-64-modern may need to be refined further in the future # but stdenv.hostPlatform CPU flags do not currently work on Darwin # https://discourse.nixos.org/t/darwin-system-and-stdenv-hostplatform-features/9745 archDarwin = if stdenv.hostPlatform.isx86_64 then "x86-64-modern" else "apple-silicon"; arch = if stdenv.hostPlatform.isDarwin then archDarwin else if stdenv.hostPlatform.isx86_64 then "x86-64" else if stdenv.hostPlatform.isi686 then "x86-32" else if stdenv.hostPlatform.isAarch64 then "armv8" else "unknown"; # These files can be found in src/evaluate.h nnueBigFile = "nn-1111cefa1111.nnue"; nnueBig = fetchurl { name = nnueBigFile; url = "https://tests.stockfishchess.org/api/nn/${nnueBigFile}"; sha256 = "sha256-ERHO+hERa3cWG9SxTatMUPJuWSDHVvSGFZK+Pc1t4XQ="; }; nnueSmallFile = "nn-37f18f62d772.nnue"; nnueSmall = fetchurl { name = nnueSmallFile; url = "https://tests.stockfishchess.org/api/nn/${nnueSmallFile}"; sha256 = "sha256-N/GPYtdy8xB+HWqso4mMEww8hvKrY+ZVX7vKIGNaiZ0="; }; in stdenv.mkDerivation rec { pname = "stockfish"; version = "17"; src = fetchFromGitHub { owner = "official-stockfish"; repo = "Stockfish"; rev = "sf_${version}"; sha256 = "sha256-oXvLaC5TEUPlHjhm7tOxpNPY88QxYHFw+Cev3Q8NEeQ="; }; postUnpack = '' sourceRoot+=/src cp "${nnueBig}" "$sourceRoot/${nnueBigFile}" cp "${nnueSmall}" "$sourceRoot/${nnueSmallFile}" ''; makeFlags = [ "PREFIX=$(out)" "ARCH=${arch}" "CXX=${stdenv.cc.targetPrefix}c++" ]; buildFlags = [ "build" ]; buildInputs = lib.optionals ( stdenv.hostPlatform.isDarwin && lib.versionOlder apple-sdk.version "11") [ apple-sdk_11 (darwinMinVersionHook "10.15") ]; enableParallelBuilding = true; meta = with lib; { homepage = "https://stockfishchess.org/"; description = "Strong open source chess engine"; mainProgram = "stockfish"; longDescription = '' Stockfish is one of the strongest chess engines in the world. It is also much stronger than the best human chess grandmasters. ''; maintainers = with maintainers; [ luispedro siraben thibaultd ]; platforms = ["x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"]; license = licenses.gpl3Only; }; }